Electrical massage instrument.



No. 642,849. Patented Feb. 6, I900.

E. T. OTTO.

ELECTRICAL MASSAGE INSTRUMENT.

(Application filed Nov. 27, 1899 (No Model.)

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UNITED STATES PATENT OFFICE.

EDMUND T. OTTO, OF JERSEY CITY, NEW JERSEYfiASSIGNOR TO I/VHITALL,

' TATUM & 00., OF NEIV YORK, N. Y.

ELECTRICAL MASSAGE INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 642,8d9, dated February 6, 1900.

Application filed November 27, 1899. Serial No- 738,2'71. (No model.)

To all whom, it ntcty concern:

Be it known that I, EDMUND T. OTTO, a citizen of the United States, residing at Jersey City, Hudson county, New Jersey, have invented certain new and useful Improvements in Electrical Massage Instruments, of which the following is a specification.

My invention relates to medical electrical massage instruments and induction-coils for use therewith.

My invention will be described with reference to the accompanying drawings, which show a massage instrument or electromedical battery embodying one form of my invention, the said drawings being illustrative merely.

In the drawings, Figure 1 is a transverse section of the instrument on line 1 1 of Fig. 2. Fig. 2 is a transverse sectionof the instrument on line 2 2 of Fig. 1. Fig. 8 is an end view of the induction-coil, and Fig. 4 is a view of the circuit diagram of the instrument.

In the drawings, a indicates the handle or casing of the instrument, recessed from opposite directions for the reception of the battery b and the induction-coil c, with a solid portion between the recesses. Mounted upon the handle are a plurality of springy currentconducting arms d, in which are journaled current-applyin g rollers cf. These rollers cf are made of carbon and are electrically separated from each other by insulation g. These rollers may be otherwise suitably located. The induction-coil c is provided with a core h, around which the coil 7) is wound. Attached to the core his an elastic rheotomearm j, which extends parallel with the coil in proximity thereto, so that the induction-coil and rheotome consist of a U-shaped magnet comprised by the coil and the parallel arms to wit, core 72. and arm j. The arm j is of magnetic material and acts as the vibrator of the rheotome. This arm cooperates with the contact-piece k, which is carried upon the cheek Z of the magnet. By so constructing the induction-coil and rheotome the said parts are made complete in themselves and are readily removable from the handle and at the same time are whollyindependent of the said handle in that all the operating parts constituteasingle operativestructure. Upon one side of the handle I have provided a circuit-closing key on, which cooperates with contact n to close the batterycircuit. A damper-coil 0 surrounds the induction-coil e' and is provided with a sliding switch p,which slides on the bar q and serves to cut more or less of the damper-coil i into or out of circuit, it being understood that the damper-coil and its switch constitute a closed circuit in which currents are induced by the currents flowing in the inductioncoil. These induced currents, as is well known, tend to cut down the current inducing them. The key m and switch 19 are so located with respect to each other that while the handle is held in the palm of the hand the key may be pressed with the thumb and the switch 19 slid with the forefinger. It will be observed that the switch 13 is included directly in the batterycircuit and forms no part of the vibrator or rheotome, which is compactly carried by the induction-coil arrangement.

The circuit arrangement will be obvious from Fig. 4, wherein the contact 01 is shown as connected to the terminal of the inductioncoil, and the upper end of the battery I) is provided with an S-shaped springy contact which bears against a circuit-terminal on the inner wall of the recess containing the battery.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In an electromedical battery, the combination, of a casing, an induction-coil supported therein by a suitable support and comprised in part by a U-shaped electromagnet constructed with substantially parallel arms one of which is elastic and extends alongside the induction-coil, and a contact carried by the support for the coil and removable from the casing therewith, the said contact cooperating with the elastic arm to constitute a rheotome or circuit-breaker, and circuit-terminals for applying the current.

2. In an electrical massage instrument, the combination of the handle having recesses in opposite ends opening in opposite directions with a solid portion intervening between the recesses, a circuit-terminal carried by the handle in each recess, a battery in one recess each other by insuiating material, the said contacting with the circuit-terminal therein, rollers being electrically connected to the an induction-coil in the other recess connected winding of the induction-coil.

to the circuit-terminal therein, a pair of re- EDMUND T. OTTO. silient arms rigidly secured to the handle and Witnesses:

a pair of current-applying rollers journaled ALFRED LITTANER,

in the arms and electrically insulated from I EMIL SCHUMANN. 

